*Offer applies to purchases of 2 primary antibody products or more, of which for 2 full size products purchased, 1 trial size product is free for eligible locations. Eligible locations must reference promotion code 2021BUY2GETT-RW when placing an order: Australia, Argentina, Bahrain, Brazil, Canada, Colombia, Chile, Croatia, Czech Republic, Denmark, Egypt, Finland, France, Greece, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Jordan, Malaysia, Northern Ireland, Norway, Poland, Portugal, Qatar, Romania, Saudi Arabia, Singapore, Slovakia, Slovenia, Spain, South Africa, South Korea, Sweden, Switzerland, Turkey, United Arab Emirates. Promotion code 2021BUY2GETT-RW expires on June 30, 2021. No cash or cash equivalent. No substitutions. Offer may not be applied to existing, pending or prior orders. All other products/services including but not limited to Sampler Kits, PTMScan® HS Kits, PTMScan® Services, and Custom orders are excluded. Cannot be combined with any other promotions or discounts. Items that are not eligible, tax and shipping and handling charges will not be included in determining merchandise subtotal. Void if copied or transferred and where prohibited by law. Institutional discounts may still be applied to other items that are not eligible for this offer. CST retains the right to stop the promotion at any given time without notice. LIMIT 8 FREE TRIAL SIZE PRODUCT(S) TOTAL PER CUSTOMER.